Hermetic Packages for Integrated Circuits Package Outline Drawing T7.A 7 LEAD TO-257 HERMETIC METAL PACKAGE Rev 1, 4/11 0.840 (21.37) 0.830 (21.08) 0.201 (5.11) 0.188 (4.78) 0.150 (3.81) 0.140 (3.56) 0.045 (1.14) 0.035 (0.89) 0.693 (17.61) 0.673 (17.09) 0.468 (11.89) 0.448 (11.38) 0.573 (14.55) 0.563 (14.30) 0.490 (12.45) 0.440 (11.18) LEAD #7 LEAD #1 0.120 BSC (3.05 BSC) 0.100 BSC (2.54 BSC) A A 0.600 BSC (15.24 BSC) TOP VIEW 2 7 PLACES SEE SECT A-A 3 0.035 (0.89) 0.025 (0.64) 0.040 (1.02) 0.025 (0.64) 1 3 SECT "A-A" NOTES: 1. Dimension applies to base metal only. 2. Dimension applies to plated part. 3. Section A-A dimension apply between 0.100 inch (2.54mm) to 0.150 inch (3.81mm) from lead tip. 4. Controlling dimensions are in inches (mm for reference only). 1